X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Ffunction%2Fgpsies%2FFormPoster.java;fp=src%2Ftim%2Fprune%2Ffunction%2Fgpsies%2FFormPoster.java;h=5939e63ef54656102f74f16d6d1f75139843571c;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/function/gpsies/FormPoster.java b/src/tim/prune/function/gpsies/FormPoster.java
new file mode 100644
index 0000000..5939e63
--- /dev/null
+++ b/src/tim/prune/function/gpsies/FormPoster.java
@@ -0,0 +1,162 @@
+package tim.prune.function.gpsies;
+
+import java.net.HttpURLConnection;
+import java.net.URLConnection;
+import java.net.URL;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Random;
+import java.io.OutputStream;
+
+/**
+ * Taken from the Client HTTP Request class at com.myjavatools.web
+ * and subsequently simplified and modified
+ * @author Vlad Patryshev
+ */
+public class FormPoster
+{
+	private URLConnection _connection = null;
+	private OutputStream _os = null;
+	private static final Random RANDOM_GEN = new Random();
+	private static final String BOUNDARY = "---------------------------"
+		+ randomString() + randomString() + randomString();
+
+
+	/** Connect (if not already connected) */
+	protected void connect() throws IOException {
+		if (_os == null) _os = _connection.getOutputStream();
+	}
+
+	/** Write a single character */
+	protected void write(char c) throws IOException {
+		connect();
+		_os.write(c);
+	}
+
+	/** Write a string */
+	protected void write(String s) throws IOException {
+		connect();
+		_os.write(s.getBytes());
+	}
+
+	/** Write a -r-n newline sequence */
+	protected void newline() throws IOException {
+		write("\r\n");
+	}
+
+	/** Write a string followed by a newline */
+	protected void writeln(String s) throws IOException {
+		write(s);
+		newline();
+	}
+
+	/** Generate a random alphanumeric string */
+	private static String randomString() {
+		return Long.toString(RANDOM_GEN.nextLong(), 36);
+	}
+
+	/** Write a boundary marker */
+	private void boundary() throws IOException {
+		write("--");
+		write(BOUNDARY);
+	}
+
+
+	/**
+	 * Creates a new multipart POST HTTP request for a specified URL
+	 * @param url the URL to send request to
+	 * @throws IOException
+	 */
+	public FormPoster(URL inUrl) throws IOException
+	{
+		_connection = inUrl.openConnection();
+		_connection.setDoOutput(true);
+		_connection.setRequestProperty("Content-Type",
+			"multipart/form-data; boundary=" + BOUNDARY);
+	}
+
+	/** Write a header with the given name */
+	private void writeName(String inName) throws IOException
+	{
+		newline();
+		write("Content-Disposition: form-data; name=\"");
+		write(inName);
+		write('"');
+	}
+
+	/**
+	 * adds a string parameter to the request
+	 * @param name parameter name
+	 * @param value parameter value
+	 * @throws IOException
+	 */
+	public void setParameter(String inName, String inValue) throws IOException
+	{
+		boundary();
+		writeName(inName);
+		newline(); newline();
+		writeln(inValue);
+	}
+
+	/** Pipe the contents of the input stream to the output stream */
+	private static void pipe(InputStream in, OutputStream out) throws IOException
+	{
+		byte[] buf = new byte[500000];
+		int nread;
+		synchronized (in) {
+			while((nread = in.read(buf, 0, buf.length)) >= 0) {
+				out.write(buf, 0, nread);
+			}
+		}
+		out.flush();
+		buf = null;
+	}
+
+	/**
+	 * adds a file parameter to the request
+	 * @param inName parameter name
+	 * @param inFilename the name of the file
+	 * @param inStream input stream to read the contents of the file from
+	 * @throws IOException
+	 */
+	public void setParameter(String inName, String inFilename, InputStream inStream) throws IOException
+	{
+		boundary();
+		writeName(inName);
+		write("; filename=\"");
+		write(inFilename);
+		write('"');
+		newline();
+		write("Content-Type: ");
+		String type = URLConnection.guessContentTypeFromName(inFilename);
+		if (type == null) {type = "application/octet-stream";}
+		writeln(type);
+		newline();
+		pipe(inStream, _os);
+		newline();
+	}
+
+	/**
+	 * posts the requests to the server
+	 * @return input stream with the server response
+	 * @throws IOException
+	 */
+	public InputStream post() throws IOException
+	{
+		boundary();
+		writeln("--");
+		_os.close();
+		return _connection.getInputStream();
+	}
+
+	/**
+	 * @return the HTTP response code, 200 for success or -1 if not available
+	 */
+	public int getResponseCode() throws IOException
+	{
+		if (_connection != null && _connection instanceof HttpURLConnection) {
+			return ((HttpURLConnection) _connection).getResponseCode();
+		}
+		return -1;
+	}
+}